Recently, some manufacturers have started exploring thermochromic materials in charger designs. While this may seem new for chargers, thermochromic materials have been used for years in products such as phone cases, mugs, toys, and other consumer products. When the product reaches a certain temperature, its shell changes color, making the effect clearly visible.
Here are a few questions about color-changing chargers:
1. How does the charger change color?
Thermochromic powder is added into the shell material (PC or PC+ABS blend) during injection molding. It is a microencapsulated pigment system, typically composed of a leuco dye, a color developer, and a temperature-sensitive solvent, which reversibly changes color with temperature. When the charger heats up and reaches a specific temperature threshold, the shell changes color.
2. At what temperature does it change color, and what colors can it become?
Both can be customized. For example, if the trigger temperature is 38°C, the charger changes color within 2–5 seconds and returns to its original color as it cools. Color options can be customized; for example, white can change to orange, red, brown, and more.
3. Does it affect material certifications?
No. It does not affect material certification and follows the same certification standards as regular chargers.
Are you interested in this color-changing feature, and what other products do you think it could be applied to? Feel free to share your thoughts with us.
